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| Justin MacDuff |
 | Nickname: J-Mac |
| Hometown: Hudson Falls, NY |
| Birthday: October 27, 1995 |
| Team: MacDuff Motorsports |
| Sponsor: Art’s Barber Shop |
|
| Late Model Pro Series |
| Season Stats |
| Year | Pts | Starts | Wins | Top 5 | Top 10 | Pts | Bns | Pen | Led | Inc |
| 2024 | 30 | 2 | 0 | 0 | 2 | 256 | 0 | 0 | 0 | 0 |
| 2022 | 5 | 10 | 0 | 5 | 7 | 1302 | 0 | 0 | 0 | 48 |
| 2021 | 7 | 10 | 0 | 3 | 9 | 1332 | 0 | 0 | 0 | 49 |
| 2020 | 10 | 11 | 0 | 2 | 4 | 1100 | 6 | -10 | 0 | 62 |
| 2019 | 6 | 16 | 1 | 8 | 9 | 1321 | 12 | -6 | 208 | 52 |
| 2018 | 10 | 14 | 1 | 8 | 10 | 1132 | 20 | -36 | 212 | 46 |
| 2017 | 15 | 13 | 0 | 0 | 7 | 380 | 3 | -3 | 0 | 64 |
| 2016 | 10 | 16 | 0 | 2 | 5 | 1151 | 6 | -5 | 4 | 71 |
| 2015 | 9 | 12 | 0 | 0 | 1 | 5088 | 9 | -5 | 0 | 89 |
| Dirt Pro Series |
| Season Stats |
| Year | Pts | Starts | Wins | Top 5 | Top 10 | Pts | Bns | Pen | Led | Inc |
| 2024 | 32 | 2 | 0 | 0 | 1 | 254 | 0 | 0 | 0 | 8 |
| 2021 | 31 | 5 | 0 | 0 | 1 | 572 | 0 | 0 | 4 | 22 |
| 2021 | 7 | 8 | 1 | 2 | 6 | 662 | 0 | 0 | 7 | 44 |
| 2020 | 6 | 11 | 1 | 5 | 7 | 677 | 16 | 0 | 56 | 36 |
| 2019 | 19 | 5 | 0 | 2 | 3 | 338 | 10 | 0 | 0 | 12 |
| White Knuckle Clothing Inc Pro Series |
| Race Results |
| Date | Race | Str | Fin | Int | Laps | Led | Inc | Pts | Bns | Pen | Total | Status |
| October 19, 2017 | Art’s Barber Shop 125 | 17 | 18 | -1 L | 124 | 0 | 13 | 23 | 0 | -1 | 22 | Running |
| November 2, 2017 | Joker’s eSport 150 | 14 | 6 | -4.996 | 150 | 0 | 20 | 35 | 0 | -2 | 33 | Running |
| November 9, 2017 | OnPitRoad.com 100 | 21 | 8 | -5.892 | 100 | 0 | 0 | 33 | 1 | 0 | 34 | Running |
| November 16, 2017 | White Knuckle Swag Life 127 | 8 | 19 | -48 L | 79 | 0 | 4 | 22 | 0 | 0 | 22 | Running |
| December 7, 2017 | NHR 100 | 13 | 8 | -2.161 | 100 | 0 | 0 | 33 | 1 | 0 | 34 | Running |
| December 14, 2017 | Lokotoco Designs 125 | 9 | 7 | -7.626 | 125 | 0 | 4 | 34 | 0 | 0 | 34 | Running |
| January 4, 2018 | Coach’s Corner 100 | 2 | 19 | -86 L | 14 | 0 | 2 | 22 | 0 | 0 | 22 | DNF |
| January 11, 2018 | Remember The Greats 150 | 12 | 17 | -109 L | 41 | 0 | 4 | 24 | 0 | 0 | 24 | Running |
| January 18, 2018 | Art’s Barber Shop 111 | 9 | 8 | -5.582 | 111 | 0 | 1 | 33 | 0 | 0 | 33 | Running |
| January 25, 2018 | Les Entreprises MP Roy 150 | 11 | 17 | -120 L | 30 | 0 | 6 | 24 | 0 | 0 | 24 | DNF |
| February 1, 2018 | Brian Rogers Motorsports 150 | 9 | 7 | -1 L | 149 | 0 | 6 | 34 | 0 | 0 | 34 | Running |
| February 8, 2018 | Allied Financial Partners 150 | 7 | 13 | -32 L | 118 | 0 | 4 | 28 | 0 | 0 | 28 | Running |
| February 15, 2018 | Chasing the Checkers 200 | 11 | 6 | -16.462 | 200 | 0 | 0 | 35 | 1 | 0 | 36 | Running |
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